... , GB/T 8163, EN10216,BS&JIS&DINMaterial:A106GrA,B,C,A53GrA,B,C,API 5L X70, X65, X60, X42,X46,X52,X56 ... 1/2 FH7 1/4184.153 1/482.555 1/221.905 1/2139.700.369.175 1/2 FH7 1/4184.153 1/288.905 1/224.705 1 ... /2139.700.4210.545 1 ... /2 FH7 1/4184.153 1/288.906 5/825.206 5 ...